2010 Yamaha Motorsports Apex Owners Manual - Page 55
2010 Yamaha Motorsports Apex Manual
Page 55 highlights
Periodic maintenance and adjustment Before installing any spark plug, measure the electrode gap with a wire thickness gauge and adjust to specification. Spark plug gap: 0.7-0.8 mm (0.028-0.031 in) When installing the spark plug, always clean the gasket surface. Wipe off any grime from the threads and tighten the spark plug to the specified torque. Spark plug tightening torque: 12.5 Nm (1.25 m·kgf, 9.0 ft·lbf) ECS00382 5. Turn the idle adjusting screw in or out to adjust the engine idling speed. 1. Idle adjusting screw NOTICE Make sure that the spark plug caps are securely installed. Otherwise the spark plug caps could be damaged due to engine vibration. ESU11804 Standard engine idling speed: 1400-1600 r/min 6. Install the headlight unit, making sure to fit the slots on its bottom over the projections on its stay. Adjusting the engine idling speed 1. 2. Place the snowmobile on a level surface and apply the parking brake. Remove the shroud, the left and right side covers, and the top cover. (See page 46 for removal procedures.) Start the engine and warm it up. Remove the headlight unit bolts, and then lift up the headlight unit. 1 3. 4. 2 1. Slot 2. Projection 7. 1 1 Install the headlight unit bolts, and then tighten them to the specified torque. Headlight unit bolt tightening torque: 3 Nm (0.3 m·kgf, 2.2 ft·lbf) 8. Install the top cover, the left and right side covers, and the shroud. 1. Headlight unit bolt 49